Tagged articles

Linux

5000 articles · Page 9 of 50

Nov 7, 2025 · Fundamentals

What Happens When You Power On a Linux Machine? Inside the Kernel Boot Process

This article explains step by step how a Linux system boots—from hardware initialization by BIOS/UEFI, through the GRUB bootloader loading the compressed kernel, to kernel decompression, initramfs setup, root filesystem mounting, init system startup, user login, and finally the orderly shutdown process, providing practical commands and troubleshooting tips.

GRUBLinuxShutdown

0 likes · 34 min read

What Happens When You Power On a Linux Machine? Inside the Kernel Boot Process

Raymond Ops

Nov 7, 2025 · Fundamentals

Unlocking Linux Process States: From Zombies to Orphans

This article explains Linux process lifecycle, detailing the five classic states, how the kernel represents them, practical commands and C code to observe state transitions, and deep dives into zombie and orphan processes with real‑world examples and mitigation techniques.

LinuxOrphan ProcessProcess Management

0 likes · 22 min read

Unlocking Linux Process States: From Zombies to Orphans

macrozheng

Nov 7, 2025 · Operations

Run Windows Apps Seamlessly on Linux with WinBoat – A Complete Guide

WinBoat is an open‑source Electron‑based tool that lets Linux users run Windows applications as native windows by leveraging Docker containers, FreeRDP, and RemoteApp, offering seamless integration, automatic deployment, full compatibility, file‑system sharing, and flexible desktop modes, with detailed installation steps for both binary and source builds.

DockerElectronLinux

0 likes · 5 min read

Run Windows Apps Seamlessly on Linux with WinBoat – A Complete Guide

php Courses

Nov 7, 2025 · Backend Development

Build a Simple PHP Web Crawler on Linux: Step-by-Step Guide

This article explains how to create a basic PHP web crawler on a Linux system, covering prerequisite installations, script development with cURL and DOMDocument, execution commands, and sample output, while emphasizing legal and ethical considerations for web scraping.

DOMDocumentLinuxPHP

0 likes · 4 min read

Build a Simple PHP Web Crawler on Linux: Step-by-Step Guide

Xiao Liu Lab

Nov 5, 2025 · Cloud Native

Deploy Navidrome in One Command: Build Your Private Music Streaming Server

This guide shows how to quickly set up Navidrome—a lightweight, fully Chinese, open‑source music streaming server—on any Linux machine using Docker Compose, covering prerequisites, configuration, security tips, and mobile client setup for seamless personal music access.

DockerDocker ComposeLinux

0 likes · 7 min read

Deploy Navidrome in One Command: Build Your Private Music Streaming Server

Raymond Ops

Nov 5, 2025 · Operations

Master Traceroute: A Step‑by‑Step Guide to Network Path Diagnosis

This comprehensive guide explains how to use the traceroute (or tracert on Windows) command across Linux, macOS, and Windows, covering installation, basic syntax, advanced options, output analysis, common use cases, and troubleshooting tips for network diagnostics.

Command LineLinuxWindows

0 likes · 10 min read

Master Traceroute: A Step‑by‑Step Guide to Network Path Diagnosis

Tech Stroll Journey

Nov 5, 2025 · Operations

How to Diagnose Linux Memory Issues: Metrics, Tools, and Step-by-Step Strategies

This guide explains essential Linux memory metrics, demonstrates how to use tools like free, top, vmstat, sar, and ps, and outlines a systematic, layered approach to pinpointing and resolving memory problems, including cache analysis and leak detection.

LinuxMetricsTroubleshooting

0 likes · 16 min read

How to Diagnose Linux Memory Issues: Metrics, Tools, and Step-by-Step Strategies

MaGe Linux Operations

Nov 5, 2025 · Databases

Deploy Redis Sentinel for High Availability in 30 Minutes – Step‑by‑Step Guide

Learn how to set up Redis Sentinel for high‑availability caching, covering prerequisites, anti‑patterns, detailed configuration of master, replicas and Sentinel nodes, firewall rules, monitoring, failover testing, troubleshooting, performance tuning, backup, rollback and best practices—all achievable within a 30‑minute deployment.

FailoverLinuxRedis

0 likes · 38 min read

Deploy Redis Sentinel for High Availability in 30 Minutes – Step‑by‑Step Guide

MaGe Linux Operations

Nov 5, 2025 · Operations

Unlock Million-Connection Web Servers: Essential Linux sysctl Tuning Guide

This comprehensive guide explains how to optimize Linux kernel parameters with sysctl for high‑traffic web services, covering prerequisite hardware, network and memory settings, step‑by‑step configuration, verification, common pitfalls, monitoring, and rollback procedures to achieve stable million‑connection performance.

LinuxPerformancekernel parameters

0 likes · 51 min read

Unlock Million-Connection Web Servers: Essential Linux sysctl Tuning Guide

Xiao Liu Lab

Nov 5, 2025 · Information Security

Stop SSH Brute‑Force Attacks: 5 Ready‑to‑Use Scripts to Harden Your Server

The article reveals how thousands of SSH brute‑force attempts target servers daily, explains why password‑based root logins are a critical risk, and provides five practical Bash scripts—analysis, auto‑banning, security checks, user audits, and daily reporting—to quickly fortify SSH defenses.

LinuxSecurity Scriptsbrute-force

0 likes · 10 min read

Stop SSH Brute‑Force Attacks: 5 Ready‑to‑Use Scripts to Harden Your Server

Xiao Liu Lab

Nov 4, 2025 · Information Security

7 Essential Redis Security Baselines to Harden Your Production Deployments

This guide details seven critical Redis hardening steps—including timeout, syslog, strong password, non‑root execution, strict file permissions, trusted bind addresses, and command renaming—to transform insecure default settings into a verifiable, production‑ready security baseline.

ConfigurationLinuxRedis

0 likes · 13 min read

7 Essential Redis Security Baselines to Harden Your Production Deployments

Raymond Ops

Nov 4, 2025 · Fundamentals

Unlock Linux Networking: From Basics to Socket Programming

This article introduces Linux networking fundamentals, covering LAN and WAN concepts, the purpose and structure of network protocols, OSI and TCP/IP layered models, MAC and IP addressing, and provides a practical guide to socket programming with ports, address families, and common API calls.

LinuxNetworkingOSI model

0 likes · 25 min read

Unlock Linux Networking: From Basics to Socket Programming

Open Source Tech Hub

Nov 4, 2025 · Fundamentals

Why epoll Beats select/poll: Inside Linux’s High‑Performance I/O Engine

This article explains how Linux’s epoll mechanism, built on libevent and using red‑black trees and ready‑list queues, provides scalable I/O multiplexing for sockets, eventfd and timerfd while traditional file systems like ext4 cannot be managed directly, and outlines the key efficiency tricks behind its design.

I/O multiplexingLinuxSocket

0 likes · 8 min read

Why epoll Beats select/poll: Inside Linux’s High‑Performance I/O Engine

Java Architect Essentials

Nov 3, 2025 · Operations

Step‑by‑Step Guide to Building a Complete Grafana‑Prometheus Monitoring System

This tutorial walks you through installing and configuring Prometheus, Grafana, and various exporters to monitor servers, MySQL, RabbitMQ, Redis, and TiDB, covering architecture, data source setup, dashboard import, email alerts, and API key management for a robust monitoring solution.

ExportersGrafanaLinux

0 likes · 24 min read

Step‑by‑Step Guide to Building a Complete Grafana‑Prometheus Monitoring System

Top Architect

Nov 3, 2025 · Operations

How to Build Nginx High Availability with Keepalived on Two VMs

This guide walks through installing Nginx on two CentOS 7 virtual machines, configuring keepalived for VRRP‑based high availability, creating a virtual IP, and demonstrating failover scenarios to ensure continuous web service availability in production environments.

KeepalivedLinuxVRRP

0 likes · 10 min read

How to Build Nginx High Availability with Keepalived on Two VMs

Ops Community

Nov 3, 2025 · Operations

Master Linux Memory Management: Core Commands & Tuning in 10 Minutes

This comprehensive guide walks you through Linux memory management fundamentals, from prerequisite environments and a quick checklist to step‑by‑step installation of monitoring tools, memory diagnostics, kernel parameter adjustments, THP and swap optimization, NUMA affinity tuning, validation, Prometheus alerts, security hardening, troubleshooting, rollback procedures, best‑practice recommendations, and ready‑to‑use scripts and configuration snippets.

LinuxMemory ManagementNUMA

0 likes · 24 min read

Master Linux Memory Management: Core Commands & Tuning in 10 Minutes

IT Services Circle

Nov 3, 2025 · Fundamentals

Why POSIX Matters: Unlocking Unix Compatibility and Portability

This article explains what POSIX is, its history, the organizations behind it, how it shaped Linux's success, and why understanding system calls versus library functions is essential for writing portable software across Unix‑like operating systems.

LinuxOperating SystemsPOSIX

0 likes · 17 min read

Why POSIX Matters: Unlocking Unix Compatibility and Portability

Deepin Linux

Nov 3, 2025 · Operations

Master Linux Memory Bugs with KASAN: From Fundamentals to Real‑World Debugging

This guide walks Linux developers and operators through the fundamentals of kernel memory management, common memory bugs, and step‑by‑step configuration and usage of KASAN—including shadow memory, compile‑time instrumentation, kernel build options, and practical code examples—to quickly locate and fix out‑of‑bounds, use‑after‑free, and leak issues.

C programmingKASANLinux

0 likes · 30 min read

Master Linux Memory Bugs with KASAN: From Fundamentals to Real‑World Debugging

21CTO

Nov 3, 2025 · Fundamentals

Top 5 Linux Distributions Every Developer Should Use

This guide reviews the five best Linux distributions for developers—Debian, Fedora, Pop!_OS, openSUSE, and Linux Mint—highlighting their stability, tooling, container support, and ease of use to help you choose the optimal development platform.

DebianDevelopmentFedora

0 likes · 8 min read

Top 5 Linux Distributions Every Developer Should Use

Code Ape Tech Column

Nov 3, 2025 · Cloud Native

Why Choose Podman Over Docker? Complete Guide to Features, Commands, and Setup

This article explains what Podman is, highlights its key differences from Docker—including daemon‑less and rootless operation—covers installation, configuration, common commands, image handling, volume management, and how to set up registry accelerators for efficient container workflows.

Docker alternativeLinuxPodman

0 likes · 18 min read

Why Choose Podman Over Docker? Complete Guide to Features, Commands, and Setup

Open Source Linux

Nov 3, 2025 · Operations

Master Linux ‘top’: Decode System Metrics and Boost Performance

This guide walks you through every line of the Linux top command output, explaining system summaries, CPU and memory metrics, process details, and advanced shortcuts, so you can quickly diagnose performance bottlenecks and become proficient at real‑time system troubleshooting.

This guide presents ten practical Linux command-line shortcuts and techniques—ranging from cursor navigation and Vim editing to quick directory switching, file transfer, process inspection, and output logging—designed to boost productivity for system administrators and developers working in terminal environments.

Command LineLinuxVim

0 likes · 10 min read

Master Essential Linux Command-Line Tricks for Faster Sysadmin Work

Deepin Linux

Nov 1, 2025 · Fundamentals

Master Linux System Call Hooking: Theory, Security & Performance Tricks

This article explores Linux system call hooking by first reviewing syscall fundamentals, then detailing various Hook techniques—including function pointer replacement, LD_PRELOAD, and kernel modules—accompanied by C/C++ examples, and demonstrates practical applications in security monitoring, performance optimization, and debugging across real-world scenarios.

DebuggingLinuxSystem Call

0 likes · 29 min read

Master Linux System Call Hooking: Theory, Security & Performance Tricks

Open Source Linux

Nov 1, 2025 · Operations

Master Linux DNS: Deep Dive into Mechanics and Best Practices

Linux DNS goes far beyond simple name‑to‑IP translation, involving hierarchical resolution, caching, and modern components like systemd‑resolved; this guide explains core concepts, the full lookup process, essential configuration files, and practical best‑practice steps such as reliable resolvers, cache management, DNSSEC, encrypted transport, and diagnostic tools.

DNSLinuxNetworking

0 likes · 9 min read

Master Linux DNS: Deep Dive into Mechanics and Best Practices

Xiao Liu Lab

Oct 31, 2025 · Databases

Why Redis Exits on ARM64: Fix the THP COW Bug and Prevent Data Loss

Redis on ARM64 platforms may abort startup with a warning about a kernel COW bug when Transparent Huge Pages are enabled, risking RDB corruption; this guide explains the underlying issue, when it’s safe to ignore the warning, and provides two solutions—disabling THP or configuring ignore‑warnings—to ensure safe operation.

ARM64COW bugDatabase

0 likes · 7 min read

Why Redis Exits on ARM64: Fix the THP COW Bug and Prevent Data Loss

Raymond Ops

Oct 31, 2025 · Operations

Transform Your Coding Workflow: Master Vim’s 26-Key Power on Linux

This guide walks you through Vim’s fundamentals on Linux, covering its purpose, core modes, essential commands for navigation, editing, and file management, as well as practical configuration tips to turn the editor into a powerful, customized development environment.

Command LineConfigurationLinux

0 likes · 12 min read

Transform Your Coding Workflow: Master Vim’s 26-Key Power on Linux

Open Source Linux

Oct 31, 2025 · Operations

Master NFS Interview Questions: 30 Essential Linux Cloud File System Q&A

This comprehensive guide covers 30 high‑frequency NFS interview questions for Linux cloud roles, detailing core concepts, configuration, security options, performance tuning, troubleshooting steps, high‑availability designs, cloud‑managed services, monitoring strategies, and alternative distributed file systems to help candidates demonstrate deep technical expertise.

Cloud ComputingLinuxNFS

0 likes · 33 min read

Master NFS Interview Questions: 30 Essential Linux Cloud File System Q&A

Liangxu Linux

Oct 30, 2025 · Operations

Boost Your Linux Ops: Advanced CLI Tricks and Fast Error Fixes

This guide equips Linux operations engineers with powerful command‑line shortcuts, automation tips, and step‑by‑step troubleshooting procedures for common errors such as permission issues, disk‑space exhaustion, missing commands, high load, and port conflicts, dramatically improving incident response speed and system reliability.

CLILinuxoperations

0 likes · 13 min read

Boost Your Linux Ops: Advanced CLI Tricks and Fast Error Fixes

Xiao Liu Lab

Oct 30, 2025 · Information Security

Essential Linux Security Baseline for Tier‑3 Compliance: Step‑by‑Step Guide

This article provides a comprehensive, step‑by‑step Linux security baseline for Tier‑3 compliance, covering password policies, login controls, access restrictions, audit logging, intrusion prevention, patch management, and resource limits, complete with executable commands for major distributions.

LinuxSystem Hardeningaudit

0 likes · 9 min read

Essential Linux Security Baseline for Tier‑3 Compliance: Step‑by‑Step Guide

Raymond Ops

Oct 30, 2025 · Information Security

Master Linux System Security: Account Hardening, Boot Controls, and Vulnerability Scanning

This guide walks through essential Linux security practices, covering account cleanup and password policies, BIOS and GRUB boot protections, command‑history sanitization, automatic logout settings, weak‑password detection with John the Ripper, and network scanning using Nmap to help harden servers against common threats.

Account HardeningGRUBLinux

0 likes · 18 min read

Master Linux System Security: Account Hardening, Boot Controls, and Vulnerability Scanning

Tech Stroll Journey

Oct 30, 2025 · Operations

How to Use fio to Measure Disk IOPS, Throughput, and Latency on Ubuntu

This guide explains how to install fio on Ubuntu 20.04, configure test environments, run IOPS and latency benchmarks with specific parameters, and interpret key metrics such as bandwidth, IOPS, slat, and clat to evaluate storage performance under high‑load and single‑request scenarios.

IOPSLinuxThroughput

0 likes · 7 min read

How to Use fio to Measure Disk IOPS, Throughput, and Latency on Ubuntu

Ops Community

Oct 30, 2025 · Databases

Zero Data Loss with Redis RDB+AOF Hybrid Persistence: A Practical Guide

This comprehensive guide walks you through configuring Redis RDB+AOF hybrid persistence for zero data loss, covering prerequisites, environment matrix, checklist, step‑by‑step implementation, kernel tuning, monitoring, performance testing, security hardening, common issues, rollback procedures, and best practices.

AOFLinuxPersistence

0 likes · 33 min read

Zero Data Loss with Redis RDB+AOF Hybrid Persistence: A Practical Guide

Deepin Linux

Oct 30, 2025 · Fundamentals

Unlocking Linux Kernel‑User Communication: How Netlink Bridges the Gap

This article explains how Linux’s Netlink mechanism provides efficient, full‑duplex communication between kernel space and user space, overcoming the limitations of ioctl, /proc, and system calls, and details its architecture, data structures, API usage, and real‑world applications.

IPCLinuxNetlink

0 likes · 45 min read

Unlocking Linux Kernel‑User Communication: How Netlink Bridges the Gap

Open Source Linux

Oct 30, 2025 · Operations

30 Essential Ansible Interview Questions & Answers for Linux Cloud Jobs

This guide compiles 30 progressively harder Ansible interview questions covering fundamentals, core components, advanced usage, best practices, and architecture, each paired with detailed answer analyses to help candidates stand out in Linux cloud computing job interviews.

AnsibleDevOpsInterview

0 likes · 31 min read

30 Essential Ansible Interview Questions & Answers for Linux Cloud Jobs

Raymond Ops

Oct 29, 2025 · Information Security

Master Linux Firewalld: Beginner’s Guide to Configuring Firewall Rules

This beginner-friendly guide explains Linux firewalld fundamentals, compares it with iptables, details zone concepts, and walks through practical examples for blocking ping, restricting SSH access, and enabling Apache, providing clear commands and configuration files to help system administrators secure their servers.

Linuxfirewallfirewalld

0 likes · 9 min read

Master Linux Firewalld: Beginner’s Guide to Configuring Firewall Rules

MaGe Linux Operations

Oct 29, 2025 · Operations

Master Linux File Systems: From Inodes to ACLs – A Practical Production Guide

This comprehensive guide walks you through Linux file system selection, inode and block allocation, formatting, mounting optimizations, ACL fine‑grained permissions, quota management, snapshot strategies, monitoring, performance tuning, capacity planning, security hardening, and troubleshooting for production environments.

ACLLinuxbackup

0 likes · 37 min read

Master Linux File Systems: From Inodes to ACLs – A Practical Production Guide

Xiao Liu Lab

Oct 29, 2025 · Operations

How to Diagnose and Fix High Swap Usage on Linux Servers

Learn step‑by‑step how to identify why your Linux server’s swap is consuming over 90% of space, understand the performance impact, and apply three safe optimization techniques—including process analysis, swappiness tuning, and cache clearing—to restore smooth operation without rebooting.

LinuxMemoryswap

0 likes · 6 min read

How to Diagnose and Fix High Swap Usage on Linux Servers

Deepin Linux

Oct 29, 2025 · Operations

Unlock Linux Performance Secrets with SystemTap: A Practical Guide

SystemTap provides Linux developers and administrators a powerful, low‑overhead dynamic tracing solution that lets you monitor kernel and user‑space events, pinpoint performance bottlenecks, debug crashes, and build custom monitoring without rebooting or recompiling, making invisible system issues visible and solvable.

This article walks through every stage a network packet undergoes inside the Linux kernel—from hardware interrupt and driver processing, through the sk_buff structures of the TCP/IP stack, to user‑space delivery—while explaining zero‑copy mechanisms like sendfile, splice, mmap and io_uring, and offering concrete tuning commands for optimal performance.

Linuxkernelnetwork-stack

0 likes · 12 min read

How Does a Linux Packet Travel from NIC to Your App? Unveiling Zero‑Copy Secrets

dbaplus Community

Oct 27, 2025 · Operations

30 Essential Linux Command Combinations to Supercharge System Administration

This guide presents 30 practical Linux command pipelines—organized into system monitoring, log analysis, file management, process control, network troubleshooting, and security auditing—that let administrators quickly diagnose resource bottlenecks, extract key log data, automate batch operations, and secure servers without writing complex scripts.

LinuxLog analysisMonitoring

0 likes · 33 min read

30 Essential Linux Command Combinations to Supercharge System Administration

MaGe Linux Operations

Oct 27, 2025 · Operations

Essential Ops Playbook: Real‑World Linux Tuning & Incident Diagnosis

This article walks ops engineers through a real production incident, explains why deep Linux kernel knowledge is crucial, presents typical high‑traffic, log‑burst, and DB‑slow‑query scenarios, and shares a three‑step practical tuning methodology with code snippets, monitoring scripts, and future‑proof tips such as eBPF and AIOps.

LinuxMonitoringeBPF

0 likes · 14 min read

Essential Ops Playbook: Real‑World Linux Tuning & Incident Diagnosis

Raymond Ops

Oct 27, 2025 · Operations

Master Linux Network Tuning for High-Concurrency: Practical Guide

This guide walks through a real‑world high‑concurrency Linux scenario, diagnosing TCP state bottlenecks, analyzing default kernel parameters, and providing step‑by‑step sysctl tweaks, queue and buffer adjustments, monitoring scripts, and stress‑test recommendations to dramatically improve connection handling and throughput.

Linuxhigh-concurrencynetwork-tuning

0 likes · 9 min read

Master Linux Network Tuning for High-Concurrency: Practical Guide

IT Services Circle

Oct 27, 2025 · Fundamentals

Understanding Linux System Calls with a Hello World Assembly Example

This article explains how system calls differ from regular function calls, demonstrates a simple x86_64 hello‑world program that uses the syscall instruction, and details how Linux maps syscall numbers to kernel functions via the MSR LSTAR register.

AssemblyLinuxSystem Call

0 likes · 7 min read

Understanding Linux System Calls with a Hello World Assembly Example

Deepin Linux

Oct 27, 2025 · Operations

Sniffnet: Free Rust‑Based Real‑Time Network Monitor

Sniffnet is a free, Rust‑written network monitoring application that offers real‑time traffic visualization, precise IP and geographic identification, protocol analysis, customizable themes, and exportable PCAP capture files, with step‑by‑step installation guides for Windows, macOS, and Linux, plus optional Npcap support.

LinuxPCAPRust

0 likes · 6 min read

Sniffnet: Free Rust‑Based Real‑Time Network Monitor

Xiao Liu Lab

Oct 27, 2025 · Operations

Why Tcping Beats Ping: Fast Port Probing for Windows and Linux

This guide explains why traditional ping often fails to reveal service issues, introduces Tcping as a reliable TCP‑based port probing tool, and provides step‑by‑step instructions for using it on Windows and Linux, including installation, common parameters, comparison with other utilities, and practical monitoring scripts.

LinuxWindowsnc

0 likes · 8 min read

Why Tcping Beats Ping: Fast Port Probing for Windows and Linux

Liangxu Linux

Oct 26, 2025 · Information Security

Master Linux Security Hardening: Advanced firewalld Rules & SELinux Context Management

This guide presents a production‑tested Linux hardening strategy that combines advanced firewalld zone and rich‑rule configurations with precise SELinux context management, offering step‑by‑step commands, custom scripts, troubleshooting tips, and performance optimizations to protect servers from the majority of common attacks.

LinuxSELinuxautomation

0 likes · 10 min read

Ray's Galactic Tech

Oct 26, 2025 · Operations

Mastering Linux Disk Space: From Detection to Safe Deletion of Large Files

Learn how to quickly locate oversized files and directories on a Linux server, verify safety before removal, use proper commands for secure deletion, and implement automation to prevent future disk‑space emergencies.

Linuxdisk spacefile deletion

0 likes · 7 min read

Mastering Linux Disk Space: From Detection to Safe Deletion of Large Files

Liangxu Linux

Oct 26, 2025 · Information Security

Master Linux Server Intrusion Detection & Rapid Incident Response: A Complete Hands‑On Guide

This comprehensive guide walks Linux administrators through early detection of system anomalies, detailed log analysis, file‑integrity checks, intrusion confirmation, step‑by‑step emergency response, system hardening, preventive monitoring, and essential open‑source security tools, all illustrated with ready‑to‑run Bash scripts.

LinuxMonitoringSecurity Scripts

0 likes · 17 min read

Master Linux Server Intrusion Detection & Rapid Incident Response: A Complete Hands‑On Guide

MaGe Linux Operations

Oct 25, 2025 · Operations

Master Linux Disk Management & I/O Optimization: Expand and Tune

This comprehensive guide walks you through Linux disk expansion, LVM provisioning, filesystem resizing, I/O scheduler tuning, performance benchmarking with fio, monitoring with Prometheus, security hardening, troubleshooting common disk issues, and best‑practice recommendations for reliable production environments.

Disk ManagementI/O optimizationLVM

0 likes · 27 min read

Master Linux Disk Management & I/O Optimization: Expand and Tune

Deepin Linux

Oct 25, 2025 · Fundamentals

Unlocking Linux Dynamic Memory Management: How the Kernel Allocates and Reclaims Memory

This article explores Linux's dynamic memory management, covering virtual and physical memory, user and kernel space separation, paging and segmentation, mmap and brk allocation methods, the slab allocator, malloc/free behavior, and the system's memory reclamation strategies including swap usage.

LinuxMemory ManagementSlab Allocator

0 likes · 33 min read

Unlocking Linux Dynamic Memory Management: How the Kernel Allocates and Reclaims Memory

Liangxu Linux

Oct 25, 2025 · Fundamentals

Master Linux Threads: Creation, Control, and Scheduling Explained

This guide explains Linux thread fundamentals, covering definitions, differences from processes, user‑level vs kernel‑level models, creation and termination with pthread APIs, attribute settings, cancellation, cleanup, detaching, and scheduling policies, all illustrated with complete code examples.

LinuxPOSIXThread Detach

0 likes · 18 min read

Master Linux Threads: Creation, Control, and Scheduling Explained

Liangxu Linux

Oct 25, 2025 · Operations

One‑Command OS Reinstall: Automate Linux, Windows, and NAS Deployments

The open‑source "reinstall" shell script automates full‑system reinstall for Linux, Windows, and popular NAS platforms, handling hardware detection, network configuration, and disk partitioning with a single command, making VPS and server provisioning fast, secure, and hassle‑free.

LinuxNASOS reinstall

0 likes · 7 min read

One‑Command OS Reinstall: Automate Linux, Windows, and NAS Deployments

Tech Stroll Journey

Oct 24, 2025 · Operations

Understanding Linux Memory Cache: Buffers, Cache, Metrics, and Monitoring Tools

This guide explains Linux in‑memory caching, distinguishes buffers from cache, shows how to interpret cache metrics like hit rate, provides commands to clear caches, and introduces the cachestat and cachetop tools for detailed cache analysis.

CacheLinuxMemory

0 likes · 5 min read

Understanding Linux Memory Cache: Buffers, Cache, Metrics, and Monitoring Tools

Raymond Ops

Oct 24, 2025 · Operations

How to Set Up Custom Nginx Monitoring and Triggers in Zabbix 7.2

This guide walks you through installing the zabbix-get service, deploying and starting Nginx, creating a Bash script for status checks, adding a custom UserParameter, validating the items on the Zabbix server, and configuring UI items and triggers to monitor Nginx health.

LinuxZabbixautomation

0 likes · 5 min read

How to Set Up Custom Nginx Monitoring and Triggers in Zabbix 7.2

MaGe Linux Operations

Oct 24, 2025 · Operations

Why Did TCP Connections Skyrocket from 15K to 65K? Full Diagnosis and Fix

This postmortem details a production outage caused by a sudden surge of TCP connections from 15 K to 65 K, explains how to reproduce the issue, walks through step‑by‑step diagnostics, root‑cause analysis, and permanent remediation using Linux kernel tuning, connection‑pool configuration, and monitoring alerts.

LinuxPerformance TuningTCP

0 likes · 32 min read

Why Did TCP Connections Skyrocket from 15K to 65K? Full Diagnosis and Fix

Deepin Linux

Oct 24, 2025 · Fundamentals

What Really Happens Inside Linux System Calls? A Deep Dive

This article explains Linux system calls as the bridge between user‑space programs and the kernel, covering their purpose, importance, the distinction between user and kernel space, the execution process, classifications, invocation methods, and performance considerations, with clear examples in C.

LinuxSystem CallsUser Space

0 likes · 50 min read

What Really Happens Inside Linux System Calls? A Deep Dive

Ray's Galactic Tech

Oct 23, 2025 · Cloud Native

How to Seamlessly Upgrade Kubernetes from Docker to Containerd

Learn a step‑by‑step process for migrating Kubernetes clusters (v1.24+) from the deprecated Docker runtime to the native Containerd CRI, covering compatibility checks, node preparation, installation, configuration, node draining, kubelet updates, validation, and common pitfalls such as cgroup driver mismatches.

CRICluster MigrationDocker

0 likes · 8 min read

How to Seamlessly Upgrade Kubernetes from Docker to Containerd

Xiao Liu Lab

Oct 23, 2025 · Databases

How to Install and Configure ClickHouse on Rocky Linux/CentOS with Remote Access

This step‑by‑step guide shows how to add the Yandex repository, install ClickHouse server and client on Rocky Linux or CentOS, configure the service, test local connections, create databases, enable remote access, and verify the setup, all within 15‑20 minutes.

ClickHouseDatabaseInstallation

0 likes · 8 min read

How to Install and Configure ClickHouse on Rocky Linux/CentOS with Remote Access

Java Web Project

Oct 23, 2025 · Cloud Computing

Why Proxmox VE Beats VMware for Small-Scale Virtualization – Complete Installation Guide

This guide compares VMware and Proxmox VE, explains why Proxmox can be more resource-efficient, and provides a detailed, step-by-step walkthrough of downloading the ISO, installing Proxmox VE, configuring networking, setting up SSL, and creating a multi-node cluster with command-line examples.

Cloud ComputingClusterInstallation

0 likes · 8 min read

Why Proxmox VE Beats VMware for Small-Scale Virtualization – Complete Installation Guide

Programmer1970

Oct 22, 2025 · Operations

Practical Guide to Server Memory Troubleshooting with free, vmstat, and sar

When Linux servers experience sudden hangs without logs or CPU spikes, memory shortages are often the hidden culprit, and this article walks developers and ops engineers through using free for quick checks, vmstat for comprehensive diagnostics, and sar for long‑term monitoring, plus a three‑step troubleshooting workflow.

Linuxfreememory monitoring

0 likes · 14 min read

Practical Guide to Server Memory Troubleshooting with free, vmstat, and sar

Tech Stroll Journey

Oct 22, 2025 · Fundamentals

Understanding Linux Swap: How It Works, Tuning Tips, and Common Cleanup Commands

Linux swap provides a disk‑backed memory extension, storing anonymous pages when RAM runs low; this article explains swap’s operation, the kernel’s memory reclamation thresholds, tuning parameters like min_free_kbytes and swappiness, and offers commands to locate high‑swap processes and safely clear swap.

LinuxMemory Managementkernel tuning

0 likes · 7 min read

Understanding Linux Swap: How It Works, Tuning Tips, and Common Cleanup Commands

Advanced AI Application Practice

Oct 22, 2025 · Operations

AI-Powered Linux Disk Cleanup: A Complete Guide

This guide presents an AI‑assisted workflow for Linux disk maintenance, including scripts for rapid diagnosis, risk assessment, personalized cleanup plans, safe log and cache removal, large‑file analysis, interactive cleanup modes, real‑time feedback, automated backups, and a one‑click execution script.

AI automationLinuxShell script

0 likes · 11 min read

AI-Powered Linux Disk Cleanup: A Complete Guide

Deepin Linux

Oct 22, 2025 · Operations

Why Your Linux Server Drops Packets and How to Debug It Step‑by‑Step

This article explains why Linux servers can experience mysterious packet loss, walks through a systematic debugging process from the link layer to the kernel TCP/IP stack, and provides practical solutions such as adjusting kernel parameters and increasing listen queue sizes to eliminate the issue.

LinuxTCP/IPnetwork debugging

0 likes · 58 min read

Why Your Linux Server Drops Packets and How to Debug It Step‑by‑Step

Dunmao Tech Hub

Oct 21, 2025 · Backend Development

How to Compile and Deploy ZLMediaKit for GB28181 Video Services

This guide walks you through installing prerequisites, cloning the ZLMediaKit source, compiling it on Linux, configuring it to work with WVP, and launching the server, plus troubleshooting tips and a Docker deployment alternative for GB28181 video integration.

C++GB28181Linux

0 likes · 7 min read

How to Compile and Deploy ZLMediaKit for GB28181 Video Services

Java Tech Enthusiast

Oct 20, 2025 · Fundamentals

The Untold Story of Richard Stallman: From Free Software to GNU/Linux

The article chronicles Richard Stallman’s obsessive pursuit of software freedom, his life in MIT’s AI Lab, the birth of the GNU project, the clash with proprietary software, the rise of Linux, and the enduring impact of the free‑software movement on modern open‑source development.

Free SoftwareGNULinux

0 likes · 11 min read

The Untold Story of Richard Stallman: From Free Software to GNU/Linux

Deepin Linux

Oct 20, 2025 · Fundamentals

How to Detect and Fix C++ Memory Leaks on Linux: Tools, Tips, and Code

This article explains what memory leaks are in C++ on Linux, why they matter, how they occur, and provides practical guidance on detecting them with tools like Valgrind, AddressSanitizer, GDB, and mtrace, followed by concrete solutions such as proper new/delete usage, smart pointers, RAII, custom allocators, and memory pools.

C++LinuxRAII

0 likes · 39 min read

How to Detect and Fix C++ Memory Leaks on Linux: Tools, Tips, and Code

Liangxu Linux

Oct 19, 2025 · Fundamentals

Master Linux Thread Programming: From Basics to Advanced Control

This article provides a comprehensive guide to Linux threads, covering fundamental concepts, the distinction between processes and threads, user‑level vs kernel‑level threading, thread creation and termination with POSIX APIs, attribute settings, cancellation, cleanup, detachment, scheduling policies, and practical code examples.

LinuxPOSIXpthread

0 likes · 17 min read

Master Linux Thread Programming: From Basics to Advanced Control

Liangxu Linux

Oct 19, 2025 · R&D Management

When a False Positive Sparks Open‑Source Backlash: The Rise and Fall of Kapitano

A Linux developer’s antivirus GUI, Kapitano, faced a heated controversy after a user reported a false‑positive detection, leading to personal attacks, the project’s abandonment, and a broader discussion about respect for volunteer open‑source contributors.

AntivirusClamAVKapitano

0 likes · 7 min read

When a False Positive Sparks Open‑Source Backlash: The Rise and Fall of Kapitano

Raymond Ops

Oct 19, 2025 · Operations

How to Install NVIDIA Drivers on Ubuntu 22.04: Complete Step‑by‑Step Guide

This guide walks you through preparing your Ubuntu 22.04 system, disabling the Nouveau driver, removing old NVIDIA packages, and installing the latest NVIDIA driver using either the graphical Software & Updates tool or command‑line methods, followed by verification and troubleshooting tips.

GPULinuxNVIDIA

0 likes · 7 min read

How to Install NVIDIA Drivers on Ubuntu 22.04: Complete Step‑by‑Step Guide

Tech Stroll Journey

Oct 19, 2025 · Operations

Why Your NVIDIA A100 Shows 25% Utilization and How Persistence Mode Fixes It

After installing drivers on an NVIDIA Tesla A100, the GPU reports a constant 25% utilization despite no workload, which can be resolved by enabling persistence mode using a simple nvidia‑smi command to keep the driver loaded and improve performance stability.

A100GPULinux

0 likes · 2 min read

Why Your NVIDIA A100 Shows 25% Utilization and How Persistence Mode Fixes It

Liangxu Linux

Oct 19, 2025 · Operations

Boost Linux Server Throughput: Practical TCP/IP Stack Tuning Guide

This article presents a comprehensive, step‑by‑step guide for Linux network performance optimization, covering real‑world issues, sysctl parameter tweaks for TCP and IP stacks, queue and interrupt tuning, high‑concurrency strategies, monitoring scripts, a detailed e‑commerce case study, best‑practice recommendations, and safety precautions.

BBRLinuxNetwork Performance

0 likes · 13 min read

Boost Linux Server Throughput: Practical TCP/IP Stack Tuning Guide

Liangxu Linux

Oct 19, 2025 · Operations

Boost Linux Network Performance: Proven Techniques to Increase Bandwidth and Reduce Latency

This article provides a comprehensive guide to Linux network performance tuning, covering key metrics, TCP window adjustments, Fast Open, congestion control algorithms, kernel parameter optimizations, zero‑copy transmission, NIC bonding, connection limits, and essential monitoring tools to achieve higher bandwidth and lower latency.

Latency ReductionLinuxNetwork Performance

0 likes · 10 min read

Boost Linux Network Performance: Proven Techniques to Increase Bandwidth and Reduce Latency

MaGe Linux Operations

Oct 18, 2025 · Operations

10 Proven Causes of Linux CPU Spikes and How to Diagnose Them Fast

Learn a step‑by‑step Linux CPU high‑usage diagnostic guide covering ten root causes, quick monitoring commands, deep analysis with top, ps, strace, perf, and flamegraphs, plus practical remediation and long‑term monitoring setup using sar and Prometheus to prevent future spikes.

CPULinuxPrometheus

0 likes · 22 min read

10 Proven Causes of Linux CPU Spikes and How to Diagnose Them Fast

Raymond Ops

Oct 18, 2025 · Operations

Master Linux Permissions: Root, Users, Groups, chmod & chown Explained

This guide explores Linux system management fundamentals, detailing the role of the root user, how to create and modify users and groups, examine file permission structures, and use essential commands such as sudo, chmod, and chown to control access and ownership on files and directories.

$rootLinuxUser Management

0 likes · 8 min read

Master Linux Permissions: Root, Users, Groups, chmod & chown Explained

Tech Stroll Journey

Oct 17, 2025 · Fundamentals

Understanding Linux Memory Management: From Physical RAM to Virtual Address Spaces

Linux memory management relies on virtual address spaces that map to physical RAM, using page tables, multi-level paging, and dynamic allocation across segments like stack, heap, and mmap, while tools such as free, top, and ps let administrators monitor usage and handle OOM scenarios.

LinuxMemory ManagementPerformance Monitoring

0 likes · 9 min read

Understanding Linux Memory Management: From Physical RAM to Virtual Address Spaces

Liangxu Linux

Oct 16, 2025 · Operations

How Many TCP Connections Can a Linux Server Actually Handle?

This article explains the Linux limits on open files and TCP connections, describes the three key kernel parameters (fs.file-max, soft/hard nofile, fs.nr_open), shows how to adjust them, and estimates realistic connection counts for servers and clients based on memory and port constraints.

LinuxServer configurationTCP

0 likes · 15 min read

How Many TCP Connections Can a Linux Server Actually Handle?

MaGe Linux Operations

Oct 16, 2025 · Operations

Essential Linux Performance Troubleshooting Cheat Sheet: From CPU to Network

This guide provides a systematic Linux performance troubleshooting cheat sheet covering CPU, memory, disk I/O, network, processes, system calls, logs, and kernel parameters, complete with over 20 practical commands, real‑world case studies, best‑practice checklists, and an FAQ to help ops engineers quickly pinpoint and resolve performance bottlenecks.

LinuxTroubleshooting

0 likes · 22 min read

Essential Linux Performance Troubleshooting Cheat Sheet: From CPU to Network

MaGe Linux Operations

Oct 15, 2025 · Operations

Master Shell Scripting: From Basics to Advanced Automation Techniques

This comprehensive guide walks you through every aspect of Shell script programming—from fundamental syntax and variables to advanced functions, control structures, and real‑world automation examples—empowering Linux administrators and developers to automate tasks efficiently.

LinuxScriptingautomation

0 likes · 7 min read

Master Shell Scripting: From Basics to Advanced Automation Techniques

Advanced AI Application Practice

Oct 15, 2025 · Operations

When Shell Scripts Meet Machine Learning: AI‑Assisted Linux Operations

This article explores how AI can augment traditional Linux system administration—covering intelligent log analysis, predictive resource management, anomaly‑based security monitoring, automated remediation, and human‑AI collaboration—through concrete case studies and step‑by‑step demonstrations.

AILinuxLog analysis

0 likes · 9 min read

When Shell Scripts Meet Machine Learning: AI‑Assisted Linux Operations

Deepin Linux

Oct 14, 2025 · Fundamentals

Unlocking Linux: How ELF Files Transform Into Running Processes

This article explains the ELF file format, its various types, internal structure, compilation and linking steps, and how the Linux kernel loads ELF binaries, creates processes with fork and exec, handles dynamic linking, relocation, and builds the process address space, providing developers and system engineers with deep insight into Linux execution.

Binary FormatELFLinux

0 likes · 40 min read

Unlocking Linux: How ELF Files Transform Into Running Processes

Raymond Ops

Oct 12, 2025 · Operations

Step-by-Step Guide to Building a DNS Server on Linux

Learn how to configure a full-featured DNS server on Linux, covering DNS fundamentals, local caching, recursive and forward queries, BIND installation, detailed named.conf settings, zone file creation for forward and reverse lookups, and client testing, with troubleshooting tips and common pitfalls.

BINDDNSLinux

0 likes · 13 min read

Step-by-Step Guide to Building a DNS Server on Linux

ITPUB

Oct 12, 2025 · Operations

30 Powerful Linux Command Combos for System Monitoring, Log Analysis & Security

This guide presents 30 practical Linux command combinations organized into six high‑frequency scenarios—system monitoring, log analysis, file management, process control, network troubleshooting, and security auditing—each with clear explanations, real‑world examples, and cautionary notes to help administrators quickly diagnose and resolve common operational issues.

Command LineLinuxLog analysis

0 likes · 33 min read

30 Powerful Linux Command Combos for System Monitoring, Log Analysis & Security

Deepin Linux

Oct 12, 2025 · Operations

Unlock Linux Performance: Mastering CFS Process Scheduling and Tuning

This comprehensive guide explains Linux’s Completely Fair Scheduler (CFS), covering its core principles, virtual runtime calculations, red‑black tree implementation, multi‑core load balancing, real‑time priority handling, and practical tuning techniques with full C++ examples to help developers and sysadmins optimize CPU allocation and system responsiveness.

CFSLinuxPerformance Tuning

0 likes · 66 min read

Unlock Linux Performance: Mastering CFS Process Scheduling and Tuning

Raymond Ops

Oct 11, 2025 · Cloud Computing

Master Linux KVM: Step‑by‑Step Deployment with Commands & Screenshots

This guide walks you through installing and configuring a KVM virtualization platform on Linux, covering its advantages and drawbacks, setting up local repositories, verifying hardware support, creating storage pools and volumes, importing ISO images, allocating resources, and launching a virtual CentOS 7 machine using virt‑manager.

CentOSKVMLinux

0 likes · 9 min read

Master Linux KVM: Step‑by‑Step Deployment with Commands & Screenshots

Raymond Ops

Oct 11, 2025 · Information Security

Master Linux Firewall & SSH: Step‑by‑Step Guide to Secure Web Server Access

This tutorial walks through configuring a Linux firewall and web server, setting up network interfaces across four virtual machines, enabling NAT, defining DMZ zones, securing SSH on a non‑standard port, and verifying connectivity, providing a comprehensive hands‑on guide for robust network security.

CentOSLinuxfirewall

0 likes · 7 min read

Master Linux Firewall & SSH: Step‑by‑Step Guide to Secure Web Server Access